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"These disasters are only getting worse, and stopping the industries and systems driving climate collapse is the only rational response," one climate group said.
Spain's deadliest flooding in 30 years killed at least 72 people as torrential rain slammed the eastern region of Valencia on Tuesday, with some towns recording a year's worth of rain in a single day.
The flooding sent churning muddy water down narrow streets, tossing cars, downing trees, bulldozing bridges and buildings, and trapping people in rising flood waters.
"The neighborhood is destroyed, all the cars are on top of each other, it's literally smashed up," Christian Viena, who owns a bar in Valencia's Barrio de la Torre, toldThe Associated Press. "Everything is a total wreck, everything is ready to be thrown away. The mud is almost 30 centimeters (11 inches) deep."
As of Wednesday morning, officials reported 70 deaths in Valencia and two in the bordering region of Castilla La Mancha. However, the death toll could rise as search and rescue operations continue amid difficult conditions, such as power outages and blocked roadways. Many people remain missing with their fates uncertain.
This includes residents of Utiel in Valencia, whose mayor, Ricardo Gabaldón, told Spanish broadcaster RTVE that Tuesday was the "worst day of my life."
"We were trapped like rats," Gabaldón said. "Cars and trash containers were flowing down the streets. The water was rising to 3 meters (9.8 feet)."
One person who was rescued was Denis Hlavaty, who spent the night perched on the edge of the roof of a gas station where he works.
"It's a river that came through," Hlavaty told Reuters, adding, "The doors were torn away and I spent the night there, surrounded by water that was 2 metres (6.5-feet) deep."
"The fossil fuel industry increases the climate emergency, destroys the balance of critical ecosystems, and puts people's lives in danger."
The storm also canceled high-speed rail travel between Valencia and Madrid and Barcelona, and derailed one high-speed train near Malaga, though no one was injured.
While the rains had tapered off in Valencia by Wednesday morning, the rest of the country is not out of danger, as the storm is projected to move northeast.
"We mustn't let our guard down because the weather front is still wreaking havoc and we can't say that this devastating episode is over," Spanish Prime Minister Pedro Sánchez
told the nation on television Wednesday.
Even if the death toll does not rise, Tuesday's floods are already the deadliest in Spain since 1996, when a flood near the Pyrenees killed 87. They are also the deadliest in Europe since floods in 2021 that killed at least 185.
In the immediate term, Tuesday's deluge was caused by a phenomenon called a gota fría, or "cold drop," a storm formed as cold air moves over the warm Mediterranean. In Spain, these kinds of storms are also commonly referred to with the acronym DANA—for Depresión Aislada en Niveles Altos, or isolated high-level depression.
However, scientists observe that the climate crisis is making rainstorms like this one more extreme, as warmer air can hold more moisture to dump when conditions are right. For Europe specifically, the warming of the Mediterranean causes more water to evaporate from its surface, super-charging rainstorms.
"Events of this type, which used to occur many decades apart, are now becoming more frequent and their destructive capacity is greater," Ernesto Rodriguez Camino, senior state meteorologist and a member of the Spanish Meteorological Association, toldReuters.
The Spanish flooding comes a little more than a month after record rainfall swamped Central Europe and Eastern Europe, in an event that scientists concluded was made approximately twice as likely and 7% more severe by the climate crisis fueled primarily by the burning of fossil fuels.
"When we talk about climate change and climate emergency, it's often perceived as an abstract concept far from our daily reality," Eva Saldaña, the executive director of Greenpeace Spain, said in a statement. "Unfortunately, this is climate change: the intensification of extreme weather phenomenons like what happened tonight, with the level of destruction greater each time. Ignoring it causes deaths that we cannot allow."
In a post on social media, Greenpeace Spain said that fossil fuel companies including the Spanish Repsol should pay for the damages.
"DANAS are more intense every time due to climate change," the group wrote. "The fossil fuel industry increases the climate emergency, destroys the balance of critical ecosystems, and puts people's lives in danger."
Extinction Rebellion Global agreed. "These disasters are only getting worse, and stopping the industries and systems driving climate collapse is the only rational response," the group wrote on social media.
The U.S.-based Climate Defiance, meanwhile, shared images of flood-ravaged streets with dismissals often leveled at climate activists.
Yellow Dot Studios, Don't Look Up director Adam McKay's climate-focused media studio, also shared an image of cars dropped in piles in the street by the flood waters to call out the double-standard in how direct-action climate protests and the corporate crimes of the fossil fuel industry are punished.
Friends of the Earth Spain focused on the human impacts, arguing that urgent climate action meant "putting people's lives, and not economic models, at the center."
"Don't prioritize sending people to work in extreme and dangerous conditions," the group wrote. "It is a priority to take effective, ambitious, and urgent measures in response to the climate crisis we are living through."
"A string of scientific studies in the past few years suggests that this risk has so far been greatly underestimated," wrote scientists in a letter to Nordic governments.
A group of 44 climate scientists from 15 different countries warn there is a "serious risk" that soaring global temperatures will trigger the "catastrophic" collapse of a crucial system of ocean currents—and possibly sooner than established estimates considered likely.
The Atlantic Meridional Overturning Circulation, or AMOC, moves warm water up from the tropics to the North Atlantic, where it sinks and cools before returning south. It is, as letter signatory and oceanographer Stefan Rahmstorf toldThe Guardian, "one of our planet's largest heat transport systems." If it collapsed, it could lower temperatures in some parts of Europe by up to 30°C.
That's why the scientists sent a letter to the Council of Nordic Ministers over the weekend urging them to take action to understand and prevent a potential collapse.
"A string of scientific studies in the past few years suggests that this risk has so far been greatly underestimated," the scientists wrote. "Such an ocean circulation change would have devastating and irreversible impacts especially for Nordic countries, but also for other parts of the world."
In the letter, the scientists detailed some of the potential "catastrophic" impacts of such a collapse, including "major cooling" in northern Europe, extreme weather, and changes that would "potentially threaten the viability of agriculture in northwestern Europe."
One study cited in the letter shows that London could cool by 10°C and Bergen, Norway by 15°C.
"If Britain and Ireland become like northern Norway, (that) has tremendous consequences. Our finding is that this is not a low probability," Peter Ditlevsen, a University of Copenhagen professor who signed the letter, toldReuters. "This is not something you easily adapt to."
Globally, the scientists said, the end of AMOC could cause the ocean to absorb less carbon dioxide, thereby increasing its presence in the atmosphere. It could also further augment sea-level rise along the U.S. Atlantic coast and alter tropical rainfall patterns.
The most recent synthesis report from the Intergovernmental Panel on Climate Change (IPCC) expressed "medium confidence" that the current would not cease functioning before 2100. Since its publication in March 2023, however, a rash of studies have come out upping the risk.
"Given that the outcome would be catastrophic and impacting the entire world for centuries to come, we believe more needs to be done to minimize this risk."
A Nature Communications study, also published last year, looked at 150 years of temperature data and determined with 95% confidence that AMOC would collapse between 2025 and 2095 if greenhouse gas emissions continue to rise as currently predicted.
Another, published in Science Advances in February, concluded that AMOC was currently "on route to tipping."
There are already signs that AMOC has begun to stall over the last six to seven decades, Rahmstorf told The Guardian, such as the cold blob in the North Atlantic that is defying global warming trends. The water in North Atlantic is also becoming less salty due to meltwater from the Greenland ice sheets and increased precipitation due to climate change. Less salty water is lighter and does not sink, interrupting the process that makes AMOC flow.
"It is an amplifying feedback: As AMOC gets weaker, the subpolar oceans gets less salty, and as the oceans gets less salty then AMOC gets weaker," Rahmstorf explained. "At a certain point this becomes a vicious circle which continues by itself until AMOC has died, even if we stop pushing the system with further emissions."
"The big unknown here—the billion-dollar question—is how far away this tipping point is," Rahmstorf said.
The scientists acknowledged that the chance of the AMOC tipping "remains highly uncertain."
They continued:
The purpose of this letter is to draw attention to the fact that only 'medium confidence' in the AMOC not collapsing is not reassuring, and clearly leaves open the possibility of an AMOC collapse during this century. And there is even greater likelihood that a collapse is triggered this century but only fully plays out in the next.
Given the increasing evidence for a higher risk of an AMOC collapse, we believe it is of critical importance that Arctic tipping point risks, in particular the AMOC risk, are taken seriously in governance and policy. Even with a medium likelihood of occurrence, given that the outcome would be catastrophic and impacting the entire world for centuries to come, we believe more needs to be done to minimize this risk.
To respond to this threat, the scientists urged the council—a group that includes Denmark, Finland, Iceland, Norway, Sweden, Greenland, the Faroe Islands, and Åland—to launch a study of the risk posed to these countries by an AMOC collapse and to take measures to counter that risk.
"This could involve leveraging the strong international standing of the Nordic countries to increase pressure for greater urgency and priority in the global effort to reduce emissions as quickly as possible, in order to stay close to the 1.5°C target set by the Paris agreement," they wrote.
Johan Rockström, a letter signatory who leads the Potsdam Institute for Climate Impact Research, wrote on social media that global politics, "particularly in [the] Nordic region, can no longer exclude [the] risk of AMOC collapse."
And there is one way that political leaders can stave off such a collapse, as well as other climate tipping points, according to Rahmstorf.
"This is all driven mainly by fossil fuel emissions and also deforestation, so both must be stopped," he told The Guardian. "We must stick to the Paris agreement and limit global heating as close to 1.5°C as possible."
"E.U. leaders must make a choice: Stand with the people and the planet, or continue propping up an economy that's driving us towards climate catastrophe," said one advocate.
Warning that policymakers in the European Union are undermining the bloc's own climate goals by continuing to subsidize fossil fuel extraction, climate scientists and other experts from across Europe were among the signatories of an open letter released Wednesday, demanding that officials redirect hundreds of billions of dollars in subsidies to "turbocharge climate solutions."
The coalition United for Climate Justice spearheaded the letter, which comes ahead of a planned march in Brussels on Saturday, October 5.
"These subsidies go against Europe's plans for a sustainable and just transition and fuel the devastating heatwaves we have seen this past summer in our continent," reads the letter. "Europe is now the fastest warming continent; we have reached a turning point and cannot afford to delay any further."
Groups including Extinction Rebellion, 350.org, and Greenpeace E.U. pointed to goals the bloc has set in recent years, including the 8th Environmental Action Program, which entered into force in 2022 and included a commitment to "phasing out fossil fuel subsidies."
The subsidies, which were estimated at more than €400 billion ($441 billion) in 2023, also stand in the way of meeting climate targets put forward in the European Green Deal, said the signatories. The plan aims to make Europe "the first climate-neutral continent," with no net emissions of greenhouse gases by 2050 and "interim targets of reducing greenhouse gas emissions by 55% by 2030 and by 90% by 2040," notes the letter.
"This will not happen without an immediate phaseout of fossil fuel subsidies," said the groups bluntly, "as a step towards a fossil-free Europe."
By continuing to subsidize fossil fuel projects, they added, the E.U. is also flouting its own Parliament's declaration of a climate emergency in 2019.
To act in line with the declaration and its climate commitments, said the groups, the E.U. must:
Phasing out the subsidies would "future-proof the European economy, reducing climate-related financial risks," they added.
The letter comes weeks after Storm Boris dumped record-breaking rains on European countries including Romania, Austria, and Poland, leading to deadly flooding.
"The E.U. cannot claim leadership on climate action while continuing to support polluting industries with billions," said Angela Huston Gold, spokesperson for United for Climate Justice. "E.U. leaders must make a choice: Stand with the people and the planet, or continue propping up an economy that's driving us towards climate catastrophe. The recent disastrous floods in Central and Eastern Europe are yet another wake-up call. We must end our fossil fuel dependency and therefore eliminate all fossil fuel subsidies."
Also last month, the Portuguese government declared a "state of calamity" over wildfires that killed at least seven people. Last year, the World Meteorological Organization (WMO) and the E.U.'s Copernicus Climate Change Service (C3S) determined the Europe is the fastest-warming continent.
"Year after year, commitments have been made and left unfulfilled, and we can no longer accept inaction," said the signatories of Wednesday's letter, who also included Luca Mercalli, president of the Italian Meteorological Society, and Paul Stubbs of the Institute of Economics in Croatia. "Until these necessary changes occur, people will continue to take to the streets to make our voices heard and hold you accountable."